In Fig. 33-47a, a light ray in an underlying material is incident at angle u1 on a

Chapter 33, Problem 46

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In Fig. 33-47a, a light ray in an underlying material is incident at angle u1 on a boundary with water, and some of the light refracts into the water. There are two choices of underlying material. For each, the angle of refraction u2 versus the incident angle u1 is given in Fig. 33-47b. The horizontal axis scale is set by u1s 90. Without calculation, determine whether the index of refraction of (a) material 1 and (b) material 2 is greater or less than the index of water (n 1.33). What is the index of refraction of (c) material 1 and (d) material 2? Water(a) (b) 1 29045 Figure 33-47 46.